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15331-5812
DUN 186

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

15331-5812 DUN 186

15^h 33^m 09.31^s -58° 11' 55.4" P.A. 295.00 sep 39.3 mag 8.73,8.82 Sp F3IV dist. 110.62 pc (360.84 l.y.)

Coord 2000	15331-5812		Discov num	DUN 186		Comp			Coord arcsec 2000	15 33 09.31 -58 11 55.4
Date first	1837		Date last	2015		Obs	18
Pa first	294		Pa last	295		P.A. Now (θ)	295°
Sep first	39.3		Sep last	39.3		Sep. Now (ρ)	39.3"
Mag pri	8.73		Mag sec	8.82		delta mag (ΔM)	0.09		Spectral class	F3IV (yellow-white)
Pri motion ra	-043		Sec motion ra	-044
Pri motion dec	-060		Sec motion dec	-062
Notes	N V (See Notes, Proper motion indicates physical)

rPM=0.029 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	294.6		Precise sep	39.338		Constellation	Norma		SAO	242679
HIP	76144		Tycho2	8707-00247-1		Gaia DR2	5882204934544118528		HD	138181
CP	CP-57 7083		Distance	110.62		Distance ly	360.84

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
15331-5812	DUN 186		2001	15	295	39.4	8.73	8.82	F3IV	NZD	153309.31-581155.4
15331-5812	DUN 186		2010	17	295	39.3	8.73	8.82	F3IV	NZ	153309.31-581155.4
15331-5812	DUN 186		2015	18	295	39.3	8.73	8.82	F3IV	NZ	153309.31-581155.4

If you need more information about this double, apply for a data request form to the WDS.